Add 6/90 and 21/9
1st number: 6/90, 2nd number: 2 3/9
6/90 + 21/9 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
6/90 = 6 × 1/90 × 1 = 6/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Add the two like fractions:
6/90 + 210/90 = 6 + 210/90 = 216/90 - 216/90 simplified gives 12/5
- So, 6/90 + 21/9 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/90+21/9 6/90+42/9 6/90+21/18 18/90+21/9 6/90+63/9 6/90+21/27 30/90+21/9 6/90+21/45 42/90+21/9 6/90+21/63